Mercurial > hg > orthanc-stone

annotate OrthancStone/Sources/Oracle/GetOrthancImageCommand.cpp @ 2114:c23eef785569

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update year to 2024
author Sebastien Jodogne <s.jodogne@gmail.com>
date Wed, 24 Jan 2024 16:44:04 +0100
parents 07964689cb0b
children 16c01cc201e7
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1 /**
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2 * Stone of Orthanc
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3 * Copyright (C) 2012-2016 Sebastien Jodogne, Medical Physics
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4 * Department, University Hospital of Liege, Belgium
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5 * Copyright (C) 2017-2024 Osimis S.A., Belgium
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6 * Copyright (C) 2021-2024 Sebastien Jodogne, ICTEAM UCLouvain, Belgium
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7 *
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8 * This program is free software: you can redistribute it and/or
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9 * modify it under the terms of the GNU Lesser General Public License
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10 * as published by the Free Software Foundation, either version 3 of
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11 * the License, or (at your option) any later version.
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12 *
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13 * This program is distributed in the hope that it will be useful, but
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14 * WITHOUT ANY WARRANTY; without even the implied warranty of
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15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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16 * Lesser General Public License for more details.
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17 *
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18 * You should have received a copy of the GNU Lesser General Public
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19 * License along with this program. If not, see
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20 * <http://www.gnu.org/licenses/>.
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21 **/
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22
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23
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24 #include "GetOrthancImageCommand.h"
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25
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26 #include <Images/JpegReader.h>
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27 #include <Images/PamReader.h>
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28 #include <Images/PngReader.h>
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29 #include <OrthancException.h>
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30 #include <Toolbox.h>
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32 namespace OrthancStone
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33 {
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34 GetOrthancImageCommand::GetOrthancImageCommand() :
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35 uri_("/"),
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36 timeout_(600),
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37 hasExpectedFormat_(false),
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38 expectedFormat_(Orthanc::PixelFormat_Grayscale8)
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39 {
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40 }
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41
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42
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43 void GetOrthancImageCommand::SetExpectedPixelFormat(Orthanc::PixelFormat format)
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44 {
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45 hasExpectedFormat_ = true;
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46 expectedFormat_ = format;
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47 }
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48
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49
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50 static std::string GetFormatSuffix(Orthanc::PixelFormat pixelFormat)
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51 {
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52 switch (pixelFormat)
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53 {
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54 case Orthanc::PixelFormat_RGB24:
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55 return "preview";
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56
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57 case Orthanc::PixelFormat_Grayscale16:
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58 return "image-uint16";
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59
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60 case Orthanc::PixelFormat_SignedGrayscale16:
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61 return "image-int16";
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62
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63 default:
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64 throw Orthanc::OrthancException(Orthanc::ErrorCode_ParameterOutOfRange);
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65 }
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66 }
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67
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68
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69 void GetOrthancImageCommand::SetInstanceUri(const std::string& instance,
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70 Orthanc::PixelFormat pixelFormat)
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71 {
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72 uri_ = "/instances/" + instance + "/" + GetFormatSuffix(pixelFormat);
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73 }
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74
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75
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76 void GetOrthancImageCommand::SetFrameUri(const std::string& instance,
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77 unsigned int frame,
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78 Orthanc::PixelFormat pixelFormat)
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79 {
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80 uri_ = ("/instances/" + instance + "/frames/" +
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81 boost::lexical_cast<std::string>(frame) + "/" + GetFormatSuffix(pixelFormat));
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82 }
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83
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84
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85 void GetOrthancImageCommand::ProcessHttpAnswer(boost::weak_ptr<IObserver> receiver,
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86 IMessageEmitter& emitter,
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87 const std::string& answer,
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88 const HttpHeaders& answerHeaders) const
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89 {
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90 for (HttpHeaders::const_iterator it = answerHeaders.begin(); it != answerHeaders.end(); ++it)
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91 {
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92 std::string key = Orthanc::Toolbox::StripSpaces(it->first);
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93 Orthanc::Toolbox::ToLowerCase(key);
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94
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95 if (key == "content-disposition" &&
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96 it->second == "filename=\"unsupported.png\"")
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97 {
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98 throw Orthanc::OrthancException(Orthanc::ErrorCode_IncompatibleImageFormat,
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99 "Orthanc cannot decode this image");
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100 }
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101 }
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102
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103 Orthanc::MimeType contentType = Orthanc::MimeType_Binary;
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104
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105 for (HttpHeaders::const_iterator it = answerHeaders.begin();
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106 it != answerHeaders.end(); ++it)
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107 {
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108 std::string s;
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109 Orthanc::Toolbox::ToLowerCase(s, it->first);
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110
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111 if (s == "content-type")
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112 {
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113 contentType = Orthanc::StringToMimeType(it->second);
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114 break;
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115 }
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116 }
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117
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118 std::unique_ptr<Orthanc::ImageAccessor> image;
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119
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120 switch (contentType)
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121 {
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122 case Orthanc::MimeType_Png:
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123 {
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124 image.reset(new Orthanc::PngReader);
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125 dynamic_cast<Orthanc::PngReader&>(*image).ReadFromMemory(answer);
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126 break;
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127 }
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128
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129 case Orthanc::MimeType_Pam:
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130 {
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131 #ifdef __EMSCRIPTEN__
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132 // "true" means we ask the PamReader to make an extra copy so that
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133 // the resulting Orthanc::ImageAccessor is aligned (as malloc is).
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134 // Indeed, even though alignment is not required in Web Assembly,
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135 // Emscripten seems to check it and bail out if addresses are "odd"
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136 image.reset(new Orthanc::PamReader(true));
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137 #else
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138 // potentially unaligned, with is faster and consumes less heap memory
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139 image.reset(new Orthanc::PamReader(false));
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140 #endif
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141 dynamic_cast<Orthanc::PamReader&>(*image).ReadFromMemory(answer);
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142 break;
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143 }
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144
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145 case Orthanc::MimeType_Jpeg:
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146 {
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147 image.reset(new Orthanc::JpegReader);
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148 dynamic_cast<Orthanc::JpegReader&>(*image).ReadFromMemory(answer);
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149 break;
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150 }
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151
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152 default:
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153 throw Orthanc::OrthancException(Orthanc::ErrorCode_NetworkProtocol,
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154 "Unsupported HTTP Content-Type for an image: " +
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155 std::string(Orthanc::EnumerationToString(contentType)));
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156 }
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157
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158 if (hasExpectedFormat_)
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159 {
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160 if (expectedFormat_ == Orthanc::PixelFormat_SignedGrayscale16 &&
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161 image->GetFormat() == Orthanc::PixelFormat_Grayscale16)
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162 {
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163 image->SetFormat(Orthanc::PixelFormat_SignedGrayscale16);
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164 }
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165
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166 if (expectedFormat_ != image->GetFormat())
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167 {
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168 throw Orthanc::OrthancException(Orthanc::ErrorCode_IncompatibleImageFormat);
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169 }
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170 }
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171
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172 //{
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173 // // DEBUG DISPLAY IMAGE PROPERTIES BGO 2020-04-11
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174 // const Orthanc::ImageAccessor& source = *image;
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175 // const void* sourceBuffer = source.GetConstBuffer();
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176 // intptr_t sourceBufferInt = reinterpret_cast<intptr_t>(sourceBuffer);
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177 // int sourceWidth = source.GetWidth();
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178 // int sourceHeight = source.GetHeight();
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179 // int sourcePitch = source.GetPitch();
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180
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181 // // TODO: turn error into trace below
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182 // LOG(ERROR) << "GetOrthancImageCommand::ProcessHttpAnswer | source:"
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183 // << " W = " << sourceWidth << " H = " << sourceHeight
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184 // << " P = " << sourcePitch << " B = " << sourceBufferInt
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185 // << " B % 4 == " << sourceBufferInt % 4;
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186 //}
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187
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188
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189 SuccessMessage message(*this, *image, contentType);
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190 emitter.EmitMessage(receiver, message);
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191 }
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192 }